You would think aerial photos would give an indication of how many cruise missiles hit home. Some being shot down would not be a surprise. Did the USA use decoys, jamming or other tactics to improve the success?

Yes. The US used signal jamming technology. They always employ wild weasel aircraft in such an attack, and the newest model is more advanced than those used in the OIF attacks in Iraq. The missiles used were also immune to having their GPS systems jammed. They are now capable of independently finding their targets even when they lose contact with the GPS satellites.

i'm not surprised that they'd make such a claim. Frankly, I don't care one way or the other, but I doubt that any nation, including the US, has the capability to effectively intercept such missiles. Doing so would be the equivalent of shooting down a bullet that had been fired at someone with a handgun.

A Russian arms company has announced plans to develop new electronic warfare systems in three years after analyzing U.S. Tomahawk missiles recovered following a recent coalition strike in Syria.

The United States, Britain and France launched 105 missiles on Syrian government forces last month in retaliation for a suspected chemical attack on a rebel-held area near the capital. The Russian military had warned prior to the airstrikes that it would target the missiles and the locations from which they are fired.

The Russian military electronic equipment producer Radio-Electronic Technologies Concern (KRET) is analyzing the Tomahawks that were sent to Russia after being recovered in Syria, one of its senior managers told the state-run RIA Novosti news agency on Tuesday.

“Knowing all these parameters, we’ll be able to more effectively jam these cruise missiles at all stages of their combat use,” RIA quoted KRET’s deputy head Vladimir Mikheyev as saying.

The Russian military displayed fragments of what it said were unexploded U.S. Tomahawks two weeks after the attack near Damascus.

“They are being examined by Russian specialists. The results of this work will be used to improve Russian weapons,” Colonel General Sergei Rudskoy said at the time.

The U.S. Defense Department called the claims “another example of the Russian disinformation campaign,” CNBC reported.

It is a good chance a cruise missile was shot down they only fly about 600 MPH (sub sonic) which means they can be intercepted by fighter Aircraft. Mostlikley if this is done they did not avoid Radar and interceptors were sent or fighter pilot caught a visual (most likely) of the cruise missile and intercepted it.